One oyster filters 50 gallons of water per day - TED video

Kate Orff: Reviving New York's rivers -- with oysters!

TEDtalksDirector | January 31, 2011 | Architect Kate Orff sees the oyster as an agent of urban change. Bundled into beds and sunk into city rivers, oysters slurp up pollution and make legendarily dirty waters clean -- thus driving even more innovation in "oyster-tecture." Orff shares her vision for an urban landscape that links nature and humanity for mutual benefit.